B.good wants to help you work up an appetite, quite literally, at their burger mile tomorrow.

In order to raise money for Back on My Feet, a nonprofit organization that promotes self-sufficiency among residents of homeless shelters, b.good is hosting a community mile-long jog with free burgers for all participants. The run starts at 3 p.m. at the b.good in Harvard Square.

No advance sign-up is necessary. Just show up ready to run and ready to eat. "It's open to anybody and everybody," said Jon J. Olinto, co-owner and co-founder of b.good. "We want everybody to come out."

The event also hopes to raise awareness for b.good's marathon team, The Burger Brigade. The team, that includes 10 Harvard students, will don burger and fry costumes to run the Boston Marathon on April 18.

"The coolest part about it is each student [on the team] that crosses that finish line raises 1,800 bucks," Olinto said. "That sum represents the cost of taking a guy from a shelter and running him through the entire program. It'll get him started on his life and being productive."